package com.sky.controller.admin;

import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.Set;

@RestController("adminDishController")
@RequestMapping("/admin/dish")
@Api(tags = "菜品相关接口")
@Slf4j
public class DishController {
    @Autowired
    private DishService dishService;

    @Autowired
    RedisTemplate redisTemplate;
    @PostMapping()
    @ApiOperation("新增菜品")
    public Result save(@RequestBody DishDTO dishDTO){
        log.info("新增菜品：{}", dishDTO);
        dishService.saveWithFlavor(dishDTO);
        // 清理redis 缓存
        String key = "dish_" + dishDTO.getCategoryId();
        cleanCache(key);
        return Result.success();
    }

    /**
     * 菜品分页查询
     * @param dishPageQueryDTO
     * @return
     */
    @GetMapping("/page")
    @ApiOperation("菜品分页查询")
    public Result<PageResult> page(DishPageQueryDTO dishPageQueryDTO){
        log.info("菜品分页查询：{}",dishPageQueryDTO);
        PageResult pageResult = dishService.pageQuery(dishPageQueryDTO);
        return Result.success(pageResult);
    }

    /**
     * 菜品批量删除
     * @param ids
     * @return
     */
    @DeleteMapping
    @ApiOperation("菜品批量删除")
    public Result<String> deleteById(@RequestParam List<Long> ids){
        // ids 是逗号分割的Query请求体
        // 例如：dish?ids=1,2,3
        log.info("菜品批量删除：{}",ids);
        dishService.deleteBatch(ids);
        // 清理redis缓存, 可能涉及多个分类，那么就有可能多个key，于是干脆把dish开头的key都删掉了
        cleanCache("dish_*");

        return Result.success();
    }

    @GetMapping("/{id}")
    @ApiOperation("根据id查询菜品")
    public Result<DishVO> getById(@PathVariable Long id){
        log.info("根据id查询菜品：{}",id);
        DishVO dishVO = dishService.getByIdWithFlavor(id);
        return Result.success(dishVO);
    }

    @PutMapping
    @ApiOperation("修改菜品")
    public Result update(@RequestBody DishDTO dishDTO){
        log.info("修改菜品：{}",dishDTO);
        dishService.updateWithFlavor(dishDTO);
        // redis 清缓存，有可能换分类，那么影响到了两个key ,干脆dish开头全删了
        cleanCache("dish_*");

        return Result.success();
    }


    @PostMapping("/status/{status}")
    @ApiOperation("启售/停售菜品")  // ../status/1?id=
    public Result startOrStop(@PathVariable Integer status, Long id){
        log.info("启售/停售菜品：{} ,{}", status, id);
        dishService.startOrStop(status, id);

        cleanCache("dish_*");

        return Result.success();
    }

     /**
     * 根据分类id和菜品名称查询菜品 , 仅仅用于套餐 添加菜品时 搜索
     * @param categoryId
     * @param name
     * @return
     */
    @GetMapping("list")
    @ApiOperation("根据分类id和菜品名称查询菜品")
    public Result<List<Dish>> list(@RequestParam(value = "categoryId", required = false) Long categoryId, @RequestParam(value = "name", required = false) String name){
        log.info("根据分类id查询菜品：{}", categoryId);
        List<Dish> list;
        if (name != null) {
            log.info("根据菜品名称查询菜品：{}", name);
            list = dishService.listByName(name);
        } else {
            log.info("根据分类id查询菜品：{}", categoryId);
            list = dishService.listByCategoryId(categoryId);
        }
        return Result.success(list);

    }

    private void cleanCache(String pattern){
        Set keys = redisTemplate.keys(pattern);
        log.info("清理缓存：{}", keys);
        redisTemplate.delete(keys);

    }
}
